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oe1(光电查) - 科学论文

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  • [IEEE 2019 21st International Conference on Transparent Optical Networks (ICTON) - Angers, France (2019.7.9-2019.7.13)] 2019 21st International Conference on Transparent Optical Networks (ICTON) - Silicon Photonics for Quantum Communication

    摘要： Silicon quantum photonics, capable to integrate large numbers of optical components with CMOS-compatible fabrication technology and reliable control of quantum states, is expected to play a critical role in future quantum communication. In this talk, we will introduce our recent results of silicon photonics for quantum communication, including high-dimensional silicon chip-to-chip quantum key distribution, chip-to-chip quantum teleportation, on-chip generation of high-dimensional quantum entanglement, and Hong–Ou–Mandel interference between two different III-V/silicon hybrid lasers towards future measurement device independent quantum communication.

    关键词： quantum entanglement,high-dimensional quantum photonics,Hong-Ou-Mandel interference,silicon photonics,quantum communication,quantum key distribution

    更新于2025-09-11 14:15:04

  • Polarization Entanglement by Time-Reversed Hong-Ou-Mandel Interference

    摘要： Sources of entanglement are an enabling resource in quantum technology, and pushing the limits of generation rate and quality of entanglement is a necessary prerequisite towards practical applications. Here, we present an ultrabright source of polarization-entangled photon pairs based on time-reversed Hong-Ou-Mandel interference. By superimposing four pair-creation possibilities on a polarization beam splitter, pairs of identical photons are separated into two spatial modes without the usual requirement for wavelength distinguishability or noncollinear emission angles. Our source yields high-fidelity polarization entanglement and high pair-generation rates without any requirement for active interferometric stabilization, which makes it an ideal candidate for a variety of applications, in particular those requiring indistinguishable photons.

    关键词： photon pairs,quantum technology,Hong-Ou-Mandel interference,polarization entanglement

    更新于2025-09-10 09:29:36

  • Beating the Rayleigh Limit Using Two-Photon Interference

    摘要： Multiparameter estimation theory offers a general framework to explore imaging techniques beyond the Rayleigh limit. While optimal measurements of single parameters characterizing a composite light source are now well understood, simultaneous determination of multiple parameters poses a much greater challenge that in general requires implementation of collective measurements. Here we show, theoretically and experimentally, that Hong-Ou-Mandel interference followed by spatially resolved detection of photons provides precise information on both the separation and the centroid for a pair of point emitters, avoiding trade-offs inherent to single-photon measurements.

    关键词： quantum imaging,Multiparameter estimation,superresolution,Hong-Ou-Mandel interference

    更新于2025-09-04 15:30:14